Key result
Heating washed rabbit myofibrils at pH 4.8-5.6 and 35-42°C reduced Ca2+ and Mg2+ activated ATPase activity and extractability following first-order kinetics.
Post-mortem conditions (pH and temperature) significantly affect the denaturation and extractability of myofibrillar proteins in rabbit muscle.
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Post-mortem pH-temperature effects on rabbit myofibrils warrant caution; leaves open relevance to human cardiac or skeletal muscle.
I. F. Penny (1967) studied Post-mortem rabbit muscle. Heating at pH 4.8-5.6 and temperatures 35-42°C was evaluated on Extractability and adenosine triphosphatase (ATPase) activity. Heating washed rabbit myofibrils at pH 4.8-5.6 and 35-42°C reduced Ca2+ and Mg2+ activated ATPase activity and extractability following first-order kinetics.
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